Abstract
Since the discovery of ferromagnetic morphotropic phase boundary (MPB) in 2010, the connotation and extension of MPB have been becoming more and more abundant. Over the last dozen years, much experimental work has been done to design magnetostrictive materials based on the MPB principle. However, due to the difficulty in direct experimental observations and the complexity of theoretical treatments, the insight into the microstructure property relationships and underlying mechanisms near the ferromagnetic MPB has not been fully revealed. Here, we have reviewed our recent computer simulation work about the super-magnetoelastic behavior near the critical region of several typical materials. Phase-field modeling and simulation are employed to explore the domain configuration and engineering in single crystals as well as the grain size effect in polycrystals. Besides, a general nano-embryonic mechanism for superelasticity is also introduced. Finally, some future perspectives and challenges are presented to stimulate a deeper consideration of the research paradigm between multiscale modeling and material development.
Graphical Abstract
摘要
自从2010年铁磁准同型相界(MPB)被发现以来,MPB的内涵和外延变得越来越丰富。在过去的十几年里,研究者们开展了大量基于MPB原理来设计磁致伸缩材料的实验工作。然而,由于直接实验观测的困难性和理论处理的复杂性等原因,铁磁MPB附近微结构性质和潜在机制尚未完全被揭示。在这里,我们回顾了近期关于几种典型材料临界区域附近超磁弹性行为的计算机模拟工作。主要包括基于相场模型系统研究了铁磁单晶MPB附近的畴结构和畴工程手段,指出了多晶体系中准同型相界的晶粒尺寸效应;此外,还介绍了一种可广泛描述相界附近超弹行为的纳米胚胎机制。最后,提出了该领域未来的前景和面临的挑战,以激发读者关于多尺度建模与材料开发之间研究范式的深层思考。
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This work was financially supported by the Natural Science Foundation of China (Nos. 51701091, 12174210 and 52174346), Shandong Provincial Natural Science Foundation, China (Nos. ZR2020QE028 and ZR2022ME030), the Innovation Team of Higher Educational Science and Technology Program in Shandong Province (No. 2019KJA025), the Research Foundation of Liaocheng University (No. 318012119) and the Science and Technology Innovation Foundation of Liaocheng University (No. CXCY2021139).
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Zhang, Z., Hu, CC., Zhou, AH. et al. Computer simulation of super-magnetoelastic behavior near critical region of magnetic materials based on phase-field method. Rare Met. 42, 2477–2488 (2023). https://doi.org/10.1007/s12598-023-02294-0
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DOI: https://doi.org/10.1007/s12598-023-02294-0